Planishing device.



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PLANiSHING DEVICE.

APPLiCATiON FILED FEB. 26. 1918.

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ATTORNEY IINITED STATES PATENT UFFIQE.

THOMAS NOLAN, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE WATERBURY FARREL FOUNDRY AND MACHINE COMPANY, OF WATERBURY, CONNECTICUT, A

CORPORATION OF CONNECTICUT.

PLANISHING DEVICE.

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Specification of Letters Patent.

Patented Feb. 18, 11919..

Application filed February 26, 1918. Serial No. 219,174..

. vices, of which the "following is a specification.

My invention relates to improvements in planishing devices, particularly oneapplicable to the'planishing of the faces of blanks of polygonal cross section, by which term I mean any shape having one or more flat sides.

One of the objects of my invention, among others, is to provide a device which will planish the faces of such blanks with the minimum amount of pressure and with the minimum amount of wearton the device itself.

With this and other objects in view, my invention consists of certain novel features of construction, combination and arrangement of parts .as will be more fully described and pointed out in the appended claims.

' In the drawings, Figure 1 represents a plan of an illustrative form of my novel planishing device with its cover removed;

Fig. 2 is a section through Fig. 1 on the line 22 and also a section partly broken away through the cover;

Fig. 3 shows a, portion of a machine in which my illustrative form of planishing device is shown in connection with a die for forming a polygonal cross section on a blank; and

Fig. 4 is a partial section of the cover illustrated in Figs. 2 and 3.

The corresponding parts are referred to both in the drawings and specification by similar reference characters.

In the drawings 10 represents the preferably hardened steel base of one form of my invention which I have chosen for purposes of illustration. 11 is a ring surrounding the base; 12 are the planishing rollers also preferably hardened. Each of these rollers, which is cylindrical in form, rests in a slot in the baselO. These slots are formed so that the rollers 12 are held end to end with their convex surfaces just touching, so that the lines passing through these points of contact of the rollers form a polygon, (which in the form illustrated s a hex gon), which will be arranged according to the shape and size of the blank whose faces are to be planished.

Into the slots in the base 10 in which the rollers 12 rest are also placed hardened steel blocks 13 between each roller 12 and the ring 11.

The members so far described constitute the planishing device proper and obviously will iron, smooth out and polish the faces of any polygonal blank passed between the rollers, which rotate as the blank passes through and the polygonal opening between the rollers being slightly smaller than the polygonal section of the blank so that the surfaces are rolled out and made smooth and polished under the pressure. Because of the rotation of the rollers, the tendency to Wear is much reduced, a new pressure surface being always presented instead of concentrating all of the wear on one point.

Preferably I provide some form of cover device for my planishing rollers and their holders. This cover pre erably is provided with a polygonal opening similar to that formed by the planishing rollers, so that the blank to be planished will be guided as it enters the planishing rollers. Such a cover is illustrated at 1 1. In this form, the cover is combined with the cutting die which cuts the faces on the blank just before it is passed into the planishing device.

In the form illustrated, the cover is provided with means to keep the rollers 12 from rolling toward the axis of the planishing device, this means consisting of a lip or ledge 15 turned in the base of the cover so as to project beyond the center of the rollers and below their tops. It will be obvious that this lip 15 must be slightly greater in diameter than the maximum diameter of the polygon formed by the rollers; otherwise, it would interfere with the blank passing into the planishing device. Preferably, for ease in manufacture, this lip is formed by turning a groove 16 in the base of the cover 1 1 and the lip 15' therefore will contact only at one point at the middle of each roller, but this, of course, is sufiicient to hold the roller in lace. I

Referrlng particularly to Fig. 3, it will be understood that the planishing device and its cover 14: are held against a head 17 by a h lder 18 and the cover 14 has a hexagonal,

opening 19 formed with cutting edges 20. When the head 21 of the blank 22 is forced into the opening 19 by the punch 23, the head 21 will be cut to form a hexagonal blank in this instance, and the continued motion of the punch 23 will carry the blank through the planishing rollers 12 and the blank will fall through the opening 24 in the head 17. Any other arrangement can be provided for forcing blanks through my novel planishing device.

It will be understood that the specific construction of my planishing device may be varied within wide limits, although the form illustrated is well adapted for economical manufacture. The loose blocks'13 are advantageous because they enable slight adjustments in the position of the rollers 12 so that the opening formed by them can be adjusted to suit the blank to be planished and to take up any wear. This adjustment can be made either by substituting new blocks 13 or by putting additional members between them and the ring 11. Such adjustment, of course, may also be provided by suitable screws through the ring 11.

It will also be obvious that the rollers 12 could be provided with spindles engaging in v the rollers so that this presslire will be taken up directly through the bod of the roller 12. In planishing some blan s not all of the rollers 12 will be required. For instance, in

certain forms of shackle bolts, the heads are circular in cross section, except for two opposite flat faces formed on the head. n planishing such a head, only two rollers, oppositely disposed, will be required.

I claim 1. A planishing device comprising a plurality of rollers in the same plane With their axes relatively angularly arranged to form a polygon.

2. A member having a polygonal open- I ing and a planishing device adjacent one 1 end of the opening, the device comprising'a plurality of rollers each with its axis parallel to one of the surfaces of the polygonal opening.

3. A member provided with cutting edges to give a'polygonal section to a blank passed through the die, and a plurality of rollers adjacent the back of the member and each constructed and arranged to lanish one of the facesformed by the cutting edges.

4. A plilIllSlllligHViCO comprising a series of cylindrical rollers in contact end to on and with their axes in angular relation, so that the rollers inclose a polygonal opening with each angle of the polygon located at a point of contact between two of the rollers.

5. A planishing device comprising a series of cylindrical rollers in contact end to end and with their axes in angular relation, so that the rollers inclose a polygonal opening with each angle of the polygon located at a point of contact between two of the rollers, and a support for the rollers having a bearing for each roller on the side away from the polygonal opening.

6. A planishing device comprising a series of cylindrical rollers in contact end to end and with their axes in angular relation, so

that the rollers inclose a polygonal opening with each angle of the polygon located at a point of contact between two of the rollers, a support for the rollers having a bearing for each roller on the side away from the polygonal opening, {and .a cover for the rollers and support, having means thereon toprevent the rollers from passing into the polygonal opening. 7. A planishin device comprising a series of cylindrical ro lers in contact end to end and with their axes in angular relation, so that the rollers inclose a polygonal opening with each angle of the polygon located at a point of contact between two of the rollers, and a support for the rollers having a bearing for each roller on the side away from the pol gonal opening, the bearings being detacha le from the support.

8. A member-provided with an opening -therethrough with cutting edges in its periphery and planishing rollers adjacent the end of the opening away from the cutting edges, each roller leaving its axis parallel with the plane passing through a cutting edge parallel to the axis of the opening, a member surrounding the rollers, the rollers and member being constructed and arranged so that the pressure of the planishing operation is transmitted directly through the bodies of the rollers to the member.

9. The combination of a member provided with an opening and a cutting edge on the periphery of the opening, and a planishing roller adjacent the cutting edge with the axis of the roller parallel with the plane passing through the cutting edge parallel to the axis of the opening.

THOS. NOLAN. 

